GB1024692A - Production of ferro-chrome alloys - Google Patents
Production of ferro-chrome alloysInfo
- Publication number
- GB1024692A GB1024692A GB264662A GB264662A GB1024692A GB 1024692 A GB1024692 A GB 1024692A GB 264662 A GB264662 A GB 264662A GB 264662 A GB264662 A GB 264662A GB 1024692 A GB1024692 A GB 1024692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ore
- briquettes
- flux
- partially
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A ferro-chrome alloy, e.g. consisting of more than 50 to 75% Cr, 0.5 to 50% Si, trace to 10% C, with balance Fe and incidental impurities such as Mn, Al, P, S, is produced by first heating a mixture of finely divided FeO.Cr2O3 ore, e.g. passing a 60 B.S. sieve, and finely divided carbonaceous reducing agent at least comprising mainly coking coal of average swelling index at least 3, e.g. passing a 150 B.S. sieve, with or without a finely ground flux such as silica sand, e.g. at 600-1250 DEG C., to at least partially carbonize the coal and partially reduce the ore in the solid state, and then smelting the resulting mass to completely reduce the partially reduced ore to Fe-Cr alloy at least partly by means of the residual carbon in the mass. Before heating, the mixture is preferably formed into green pellets or briquettes incorporating moisture as a temporary binder, with or without bentonite, the pellets or briquettes being dried e.g. at 100-200 DEG C. After heating, pellets or briquettes are formed comprising cellular matrices of coke with interstitial partially reduced ore with or without flux. The smelting may be performed in a submerged arc electric furnace wherein the combustible gas produced-mainly CO-is burnt to provide for initial heating. Additional ore, carbonaceous reducing agent, or flux, in lumpy form if desired, may be added to the smelting charge. The reducing agent may include powdered anthracite, charcoal or coke.ALSO:Pellets or briquettes comprising cellular matrices of coke containing interstitial partially reduced finely divided, e.g. passing a 60 B.S. sieve, iron-chrome oxide ore, with or without finely ground flux such as silica sand, for smelting to produce ferro-chrome alloy, are formed by briquetting a finely divided mixture of FeO.Cr2O3 ore and carbonaceous reducing agent at least comprising mainly coking coal of average swelling index at least 3, e.g. passing a 150 B.S. sieve, with or without the flux and moisture as a temporary binder, preferably drying at 100-200 DEG C., and heating the green pellets or briquettes formed at 600-1250 DEG C. to at least partially carbonize the coal and partially reduce the ore in the solid state. Bentonite may be added to the mixture as a binder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB264662A GB1024692A (en) | 1962-01-24 | 1962-01-24 | Production of ferro-chrome alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB264662A GB1024692A (en) | 1962-01-24 | 1962-01-24 | Production of ferro-chrome alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1024692A true GB1024692A (en) | 1966-03-30 |
Family
ID=9743250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB264662A Expired GB1024692A (en) | 1962-01-24 | 1962-01-24 | Production of ferro-chrome alloys |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1024692A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871311A (en) * | 1971-12-28 | 1973-09-27 | ||
JPS4834966B1 (en) * | 1969-01-17 | 1973-10-25 | ||
JPS493367B1 (en) * | 1968-04-19 | 1974-01-25 | ||
JPS5080910A (en) * | 1973-11-21 | 1975-07-01 | ||
JPS5220315A (en) * | 1975-08-09 | 1977-02-16 | Showa Denko Kk | Method of reducing roasting pellets of chrome ore |
EA016426B1 (en) * | 2010-10-27 | 2012-04-30 | Фазыл Каюмович ШАДИЕВ | Method for melting high-carbon ferrochrome |
-
1962
- 1962-01-24 GB GB264662A patent/GB1024692A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS493367B1 (en) * | 1968-04-19 | 1974-01-25 | ||
JPS4834966B1 (en) * | 1969-01-17 | 1973-10-25 | ||
JPS4871311A (en) * | 1971-12-28 | 1973-09-27 | ||
JPS5080910A (en) * | 1973-11-21 | 1975-07-01 | ||
JPS5344129B2 (en) * | 1973-11-21 | 1978-11-27 | ||
JPS5220315A (en) * | 1975-08-09 | 1977-02-16 | Showa Denko Kk | Method of reducing roasting pellets of chrome ore |
JPS563896B2 (en) * | 1975-08-09 | 1981-01-27 | ||
EA016426B1 (en) * | 2010-10-27 | 2012-04-30 | Фазыл Каюмович ШАДИЕВ | Method for melting high-carbon ferrochrome |
WO2012057593A1 (en) * | 2010-10-27 | 2012-05-03 | Shadiev Fazil Kayumovich | Method for melting high-carbon ferrochrome |
CN102686758A (en) * | 2010-10-27 | 2012-09-19 | 法兹尔·卡尤莫维奇·沙迪耶夫 | Method for melting high-carbon ferrochrome |
CN102686758B (en) * | 2010-10-27 | 2014-07-09 | 法兹尔·卡尤莫维奇·沙迪耶夫 | Method for melting high-carbon ferrochrome |
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